Dialer.Winmuschi

Dialer.Winmuschi

Behavior

When Dialer.Winmuschi runs, it displays a window inviting you to access "my webcam" using a premium rate telephone number.

Symptoms

Files are detected as Dialer.Winmuschi.

Behavior

The most common installation method for this dialer program is through various Web sites, mainly pornographic in nature.

Antivirus Protection Dates

Initial Rapid Release version
02 October 2014 revision 022

Latest Rapid Release version
01 February 2015 revision 020

Initial Daily Certified version
26 September 2003

Latest Daily Certified version
28 September 2010 revision 036

Initial Weekly Certified release date
01 October 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Dialer.Winmuschi is installed, it copies itself as %Windir%\Winmuschi.exe.

Note:
%Windir% is a variable. The dialer locates the Windows installation folder (by default, this is C:\Windows or C:\Winnt) and copies itself to that location.
It also creates a link to itself on the Windows desktop and adds itself to the Start menu.

Update the virus definitions.

Run a full system scan and delete all the files detected as Dialer.Winmuschi. Delete the link on the Windows desktop and from the Start menu.

Close modem connections

For specific details on each of these steps, read the following instructions.

1. Updating the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).

Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).

2. To close modem connections
This risk uses available modems to create an Internet connection, sometimes without any visible signs. In order to successfully remove this threat, ensure that all modem-based Internet connections are disconnected before proceeding. For instructions on how to do this, consult the appropriate Internet service provider, computer manufacturer, or operating system documentation.

3. Scanning for and deleting the infected files

Start your Symantec antivirus program and make sure that it is configured to scan all the files.